I've been working with NZBSRUS on this issue and I think we found the problem. If for whatever reason the server on the other end of the RSS feed is slow to start to send the NZB file, Altbinz will time out and report "0 files" in the log. I found that I could download the file with Firefox, but when I'd click on it from the RSS feed, it would take 30 - 45 seconds to start to download the NZB.
Could we have a way to extend that timeout for when the RSS server is responding slowly for any reason?